Castamatic 13 — available now

The podcast player that listens for you.

Castamatic 13 turns any downloaded episode into a searchable transcript with navigable chapters, generated entirely on your iPhone. No servers. No accounts. No audio leaves your device.

Download on the App Store → See what's new

★ 4.8 · App Store Since 2015. Independently built by Franco Solerio.

Magic TranscriptMagic ChaptersGap-Zapper Smart PlaylistsOn-the-Go QueueSleep Timer Variable SpeedSilence SkippingVoice Boost Publisher ChaptersChapter ArtworkShownotes Podping AlertsTranscripts SearchValue4Value Boosts Funding TagsCross-App CommentsLive Items Private iCloud SyncCarPlayApple Watch Remote AirPlay 2Siri ShortcutsWidgets OPML Import / ExportSideloadingCustom RSS Download RulesStorage ManagerDark Mode Magic TranscriptMagic ChaptersGap-Zapper Smart PlaylistsOn-the-Go QueueSleep Timer Variable SpeedSilence SkippingVoice Boost Publisher ChaptersChapter ArtworkShownotes Podping AlertsTranscripts SearchValue4Value Boosts Funding TagsCross-App CommentsLive Items Private iCloud SyncCarPlayApple Watch Remote AirPlay 2Siri ShortcutsWidgets OPML Import / ExportSideloadingCustom RSS Download RulesStorage ManagerDark Mode

New in 13 · Magic Transcript

Every episode, readable.

Generate a full transcript for any downloaded episode using Apple Intelligence, on-device. The transcript panel scrolls live with playback, highlights the current line, and lets you tap any sentence to jump there instantly.

Runs on your iPhone. Uses Apple's on-device Speech framework. Works offline once the episode is downloaded.

Multi-language, automatic. Castamatic detects the podcast's language and uses the right model. No setup, no switching.

Tap to jump. The live panel highlights the line playing right now. Tap anywhere in the transcript to seek to that exact moment.

Publisher-first. If the podcast already ships a transcript, Castamatic uses it. Magic only fills the gaps.

New in 13 · Magic Chapters

Navigate long episodes like a book.

Most long-form podcasts don't ship chapter markers. Castamatic 13 generates them for you — using a multi-stage, on-device pipeline that combines semantic embeddings with Apple's Foundation Models to name every section.

Semantic boundaries. A local embedding model, running on the Neural Engine, detects topic shifts by comparing sliding windows of the transcript.

Named by Foundation Models. Chapter titles are written by Apple's on-device LLM — concise, readable, contextual to the episode.

Minutes, not hours. A two-hour interview gets clean chapters in a few minutes. Skip to exactly the bit you came for.

Opposite of cloud. Apple Podcasts generates chapters on their servers. Castamatic does it on yours.

Podcasting 2.0

Built for the open podcast ecosystem.

Castamatic is one of the most complete Podcasting 2.0 clients on iOS, supporting the new tags the open community is building, so creators and listeners don't need the big platforms to meet each other.

LiveItem

Live shows, natively

When your favorite show goes live, you see it in the app and get a push notification the moment it starts. No switching apps, no hunting for the link.

Podping

Instant new-episode alerts

Instead of polling RSS every 15 minutes, Castamatic listens on Podping, a decentralized signal the whole open-podcast community shares. Episodes appear in seconds.

Value4Value

Stream sats to creators

Send Bitcoin micropayments to podcasters as you listen, via Lightning. Connect your own wallet with NWC, or use an LNaddress. No middlemen, no subscriptions.

The player

Ten years of careful, quiet engineering.

Smart playlists

Native drag-and-drop ordering. Filter by show, listened status, or priority. The On-the-Go playlist collects exactly what you want for your next commute.

filter · sort · On-the-Go

Automatic Leveler

On-device machine learning evens out volume between speakers and segments without flattening the music. Quiet guests stop disappearing.

ML · voice-aware

Gap-Zapper

Speed up playback without making hosts sound like chipmunks. Silent gaps get trimmed dynamically so intelligibility stays intact.

dynamic · silence-aware

CarPlay & Apple Watch

A real CarPlay interface — playlists, chapters, sleep timer, speed — all reachable without the phone. Apple Watch app works as a fully functional remote for your phone app.

watchOS · CarPlay

Publisher chapters, artwork, links

Full ID3 chapter support — jump to topics, view the table of contents, read shownotes, tap through chapter-specific artwork and links inline.

ID3 · chapters · shownotes

Private iCloud Sync

Subscriptions, listening positions, playlists and settings sync through your own iCloud — end-to-end, no Castamatic account ever required.

iCloud · no account

Sideload any audio file, any format

Paste an RSS URL, import OPML, subscribe to premium private feeds, play M4A, MP3, AAC, Opus, and hand-picked live streams.

RSS · OPML · private feeds

How Castamatic works

Your listening is yours. Period.

We don't run recommendation algorithms. We don't sell attention. We can't, because we don't collect what you listen to. Every feature in Castamatic, including the new AI ones, is designed so your data never leaves your phone in the first place.

No accountInstall the app and go. Sync through your own iCloud, or don't sync at all.
No trackingWe don't log what you subscribe to, what you play, or how long you listen.
No servers for AITranscripts and chapters are generated locally with Apple Intelligence. Nothing is uploaded.